Department of Pharmaceutical Chemistry and Technology, Università degli Studi di Cagliari, Via Ospedale 72, 09124 Cagliari, Italy.
J Agric Food Chem. 2011 Jun 22;59(12):6806-12. doi: 10.1021/jf2011672. Epub 2011 May 25.
The behavior in field and the transfer from grapes to wine during winemaking of iprovalicarb, indoxacarb, and boscalid was studied. The residue levels found in grapes were far below the MRLs set for grapes in EU, accounting at harvest time 0.81, 0.43, and 4.23 mg/kg for iprovalicarb, indoxacarb, and boscalid, respectively. The residue levels in the samples treated with boscalid may have residual problems (due to an accumulation effect) if repeated field treatments will be performed. Winemaking experiments showed a complete transfer of all pesticide from grapes to the must, while in wine the residues were low or negligible due to the adsorbing effect of lees and pomace. The clarification experiments showed a good removal of pesticide residues from the wine media, for all pesticides. The GC-ITMS method showed good performance with adequate recoveries ranging from 75 to 115%, and good method limits of quantitation (LOQs) and of determination (LODs) far below MRLs.
对异丙威、茚虫威和苯并烯氟菌唑在田间的行为以及在酿酒过程中从葡萄向葡萄酒中的转移进行了研究。在葡萄中发现的残留水平远低于欧盟设定的葡萄 MRL，分别为收获时异丙威、茚虫威和苯并烯氟菌唑的 0.81、0.43 和 4.23mg/kg。如果重复田间处理，用苯并烯氟菌唑处理的样品中的残留水平可能存在残留问题（由于积累效应）。酿酒实验表明，所有农药都从葡萄完全转移到了葡萄汁中，而由于酒糟和果渣的吸附作用，葡萄酒中的残留量很低或可以忽略不计。澄清实验表明，对于所有农药，从葡萄酒介质中都能很好地去除农药残留。GC-ITMS 方法表现良好，回收率在 75%至 115%之间，且定量限（LOQs）和检测限（LODs）均远低于 MRL。
